Your search found 3 records
1 Darazkhan, G.; Latif, M.; Khan, M. J.; Kanwar, R. S. 2002. Analysis of groundwater behaviour in a farmer controlled subsurface tile drainage system in Mardan, Pakistan. Irrigation and Drainage Systems, 16(4):327-345.
Groundwater ; Subsurface drainage ; Irrigation canals ; Water table ; Monitoring ; Rain / Pakistan / Mardan / Swat River
(Location: IWMI-HQ Call no: PER Record No: H032578)
2 Munir, Sarfraz; Schultz, B.; Khan, Abdul Hakeem; Suryadi, F. X.; Gichuki, Francis. 2007. Hydrodynamic behavior of a canal network under simultaneous supply and demand based operations. Paper presented at the USCID Fourth International Conference on Irrigation and Drainage held in Sacramento, California, USA, 3-6 October, 2007. 17p.
Irrigation canals ; Flow control ; Canal regulation techniques ; Crop based irrigation ; Water requirements ; Irrigation scheduling ; Simulation models / Pakistan / Machai Branch Canal / Pehure High Level Canal / Maira Branch Canal / North West Frontier Province / Swat River / Indus River
(Location: IWMI HQ Call no: IWMI 631.7.1 G730 MUN Record No: H040871)
The irrigation network of this study consists of three branch canals (the Machai Branch Canal, the Pehure High Level Canal (PHLC) and the Maira Branch Canal) connected to each other in such a way that the Machai Branch and the PHLC feed the Maira Branch Canal for providing a reliable irrigation service. The Machai Branch Canal has limited and erratic discharges and can not fulfill the peak water requirements of the Maira Branch Canal and therefore any deficiency in the supplies to the Maira Branch Canal is automatically compensated by the PHLC. PHLC is an automatic canal and has been equipped with Proportional Integral Derivative (PID) discharge controllers at its head whereas the Machai Branch Canal has fixed supply based operations. The Maira Branch Canal is also an automatically downstream controlled irrigation canal, which is operated according to crop water requirements using Crop Based Irrigation Operations (CBIO) model. Under this scheme of operations the flows remain changing most of the time following the crop water requirements curve. The frequent changes in discharges keep the canal in unsteady state conditions, which affect the functioning of automatic discharge and water level regulation structures. Efficient system operation is a prerequisite for getting better water productivity and the precise understanding of the behavior of the structures and canal’s hydrodynamics against such changes is a key for getting effective system operations. In this paper the canal’s hydrodynamic behavior and the automatic structures’ functioning have been assessed and suggestions have been provided to fine tune the automatic discharge controllers in order to avoid the oscillatory and abrupt hydrodynamic behavior in the canal. The guidelines have been provided for the operation of the secondary system for achieving smooth and sustainable operations of the canals. In addition to this the effects of any discharge variation in the Machai Branch Canal on the automatic discharge controller’s behavior also has been assessed.
3 Nixon, R.; Ma, Z.; Zanotti, L.; Khan, B.; Birkenholtz, T.; Lee, L.; Mian, I. 2022. Adaptation to social-ecological change in northwestern Pakistan: household strategies and decision-making processes. Environmental Management, 69(5):887-905. [doi: https://doi.org/10.1007/s00267-021-01583-7]
Climate change adaptation ; Social aspects ; Ecological factors ; Households ; Decision making ; Livelihood diversification ; Environmental management ; Water supply ; Water quality ; Hydropower ; Economic value ; Communities ; Case studies / Pakistan / Khyber Pakhtunkhwa / Nowshera / Charssada / Swat River / Kabul River
(Location: IWMI HQ Call no: e-copy only Record No: H051077)
(0.97 MB)
Values are important factors shaping people’s perceptions of social–ecological changes and the associated impacts, acceptable risk, and successful adaptation to various changes; however, little empirical work has examined how values interact to influence adaptation decision-making. We drew on 25 semi-structured interviews with community leaders, farmers, fisherfolk, and individuals in the tourism industry in northwestern Pakistan to identify types of adaptations employed by households and explore what values were present in these households’ adaptation decisions. Our results show that households frequently employed environmental management and livelihood diversification to adapt to a wide range of social–ecological change. We found that multiple values influenced household adaptation and that employing an adaptation strategy often involved a tradeoff of values. We also found that household adaptations were embedded in multi-scalar social, cultural, economic, and political processes that could constrain or conflict with such adaptations. Overall, our research illustrates the complex influence of values on household adaptation decisions and highlights the need to further understand how adaptations are aligned, or misaligned, with stakeholders’ diverse values in order to inform more equitable adaptation to social–ecological change.
Powered by DB/Text WebPublisher, from
